Process of generating formaldehyde.



pertitanate of'potassium K TiO I'OH O, salts formaldehyde which consists in treating an iCorrectipn letters Panama'- 875,415.

7 UNITED STATES PAT N OFFICE.

ARTHUR EIOHENGRUM, OF DUSSELDORF, GERMANY, ASSIGNOR TO FARBENFABRIKEN VORM.

FRIEDR. BAYER '& CO., OF- ELBERFELD, GERMANY, A CORPORATION OF GERMANY.

PROCESS OF GENERATING FORMALDEHYD'E.

NO- 8 75,416. Specification of Letters Patent. I Patented Dec. 31, 1907.

- Application filed March 6.1907. 8eria1No.-360.9( )6 To all whom it may concern: 7 tion of gas takes place with eneration of Be it known that I, ARTHUR' EICHENGRI'iM 'heat and the liquid begins to oil, gaseous doctor of philosophy; chemist, citizen of the formaldehyde and steam being given off German Empire, residing at Dusseldorf, Gerwhich may be used for disinfectin purposes. many, Kingdom of Prussia, have invented The same reaction takes lace if 200 arts new and useful Improvements in Processes of a 40 per cent. solution of formaldehy e are of Generating Formaldehyde, of which the mixed with 100 parts of perborate of sodium. following is a specification. 1 This reaction is probably due to catalysis.

I have found a new process of generating Having now described my invention and 1o gaseous formaldehyde, which process conin what manner the same is to be performed, sists in treating an aqueous formaldehyde what I claim as new anddesire to secure by solution with salts ofthose peracids which LettersPatent is: p are derived from metallic peroxids, having an 1. The process of generating gaseous foralkaline reaction. a maldehyde,whichconsistsin treating an aque- 15 For my purpose I can use salts of perboous formaldehyde solution with salts of those ric acids, such as. the perborate of sodium peracids which are derived from metallic per- Na B O .1OH,O," salts of percarbonicacid, oxids, having-an alkaline reaction, substatifor example the percarbonate of sodium tially as described. I 'Na cO salts of pertitanic acid, such as the 2. The process of generating gaseous of pervanadic acid; for example the per' aqueous formaldehyde solution with a mixvanadiate of sodium, NaVO salts of peruture of salts of those peracids, which are. deranic acid, such as the peruranate of potasrived from metallic peroxids, having an alkasium, K UO salts of. perzircbnic acid, for line reaction, and fixed alkaline compounds, 25 example the perzirconateof sodium, substarliltially as desfcribed. f

' 3. T e recess 0 eneratin aseous or- Z 'Q -maldehyd, which 0%nsists treatin' an the salts of permolybdic acid such 'a's'the aqueous formaldehyde solution with-so ium' ermolybdate of potassium. KMoOJ etc. perborate, substantially as described. Flalts 'of alkaline earths etc. may also be 4. The process of generating gaseous for- 30 used. The reaction can be accelerated by; maldehyde, which consists in treating an the addition of .fixed alkaline compounds, aqueous formaldehyde solution with a mixsuch as sodium carbonate, sodium hydroxid' ture of sodium perborate and a fixed alkaor the like. Instead of one salt of those perline compound, substantially as'described. acids which are derived from. metallic per- In testimony whereof I have hereunto set- 35 oxids, having an alkaline reaction, mixtures .my-hanfl in the presence of -two subscribing of such salts of different acids may be ,used. witnesses.

On usi for instance the commercia v ormaldeh y de solution 200 parts of a 40 pef 2 EICHENGRUM' ent; formaldehyde, solution are poured upon 7 Witnesses:

0 parts of sodium'perborate mixed-With 5O OTTO KoNlo, artsof sodium hydroxid. A lively. evolu- Q J. 'A. Rrr'rERsHAUs.

I It is hereby certified thafi theha'me .of the patentee in Letters Patent N 875,418,

' granted December 31, 1997, Torah-"improvement in Processes of Generating Formalde-' "f hyde, was erroneously written and printed-Arthur Eichengriim, whereas, said i i name should have been written andg print edl- A r'ghu r E lichenzrriln and that the said I Letters Patent should be with this correction therein that the sauielxnay 'conforin -z --'to the record of the case in the latent Oflice v Signed and sealed thigh 5th daysstat it; 1 908... V p {B A-14. 1.01 entranc I zlcting -Goinjrtissionaftoffatehfi, I Y

pertitanate of'potassium K TiO I'OH O, salts formaldehyde which consists in treating an iCorrectipn letters Panama'- 875,415.

7 UNITED STATES PAT N OFFICE.

ARTHUR EIOHENGRUM, OF DUSSELDORF, GERMANY, ASSIGNOR TO FARBENFABRIKEN VORM.

FRIEDR. BAYER '& CO., OF- ELBERFELD, GERMANY, A CORPORATION OF GERMANY.

PROCESS OF GENERATING FORMALDEHYD'E.

NO- 8 75,416. Specification of Letters Patent. I Patented Dec. 31, 1907.

- Application filed March 6.1907. 8eria1No.-360.9( )6 To all whom it may concern: 7 tion of gas takes place with eneration of Be it known that I, ARTHUR' EICHENGRI'iM 'heat and the liquid begins to oil, gaseous doctor of philosophy; chemist, citizen of the formaldehyde and steam being given off German Empire, residing at Dusseldorf, Gerwhich may be used for disinfectin purposes. many, Kingdom of Prussia, have invented The same reaction takes lace if 200 arts new and useful Improvements in Processes of a 40 per cent. solution of formaldehy e are of Generating Formaldehyde, of which the mixed with 100 parts of perborate of sodium. following is a specification. 1 This reaction is probably due to catalysis.

I have found a new process of generating Having now described my invention and 1o gaseous formaldehyde, which process conin what manner the same is to be performed, sists in treating an aqueous formaldehyde what I claim as new anddesire to secure by solution with salts ofthose peracids which LettersPatent is: p are derived from metallic peroxids, having an 1. The process of generating gaseous foralkaline reaction. a maldehyde,whichconsistsin treating an aque- 15 For my purpose I can use salts of perboous formaldehyde solution with salts of those ric acids, such as. the perborate of sodium peracids which are derived from metallic per- Na B O .1OH,O," salts of percarbonicacid, oxids, having-an alkaline reaction, substatifor example the percarbonate of sodium tially as described. I 'Na cO salts of pertitanic acid, such as the 2. The process of generating gaseous of pervanadic acid; for example the per' aqueous formaldehyde solution with a mixvanadiate of sodium, NaVO salts of peruture of salts of those peracids, which are. deranic acid, such as the peruranate of potasrived from metallic peroxids, having an alkasium, K UO salts of. perzircbnic acid, for line reaction, and fixed alkaline compounds, 25 example the perzirconateof sodium, substarliltially as desfcribed. f

' 3. T e recess 0 eneratin aseous or- Z 'Q -maldehyd, which 0%nsists treatin' an the salts of permolybdic acid such 'a's'the aqueous formaldehyde solution with-so ium' ermolybdate of potassium. KMoOJ etc. perborate, substantially as described. Flalts 'of alkaline earths etc. may also be 4. The process of generating gaseous for- 30 used. The reaction can be accelerated by; maldehyde, which consists in treating an the addition of .fixed alkaline compounds, aqueous formaldehyde solution with a mixsuch as sodium carbonate, sodium hydroxid' ture of sodium perborate and a fixed alkaor the like. Instead of one salt of those perline compound, substantially as'described. acids which are derived from. metallic per- In testimony whereof I have hereunto set- 35 oxids, having an alkaline reaction, mixtures .my-hanfl in the presence of -two subscribing of such salts of different acids may be ,used. witnesses.

On usi for instance the commercia v ormaldeh y de solution 200 parts of a 40 pef 2 EICHENGRUM' ent; formaldehyde, solution are poured upon 7 Witnesses:

0 parts of sodium'perborate mixed-With 5O OTTO KoNlo, artsof sodium hydroxid. A lively. evolu- Q J. 'A. Rrr'rERsHAUs.

I It is hereby certified thafi theha'me .of the patentee in Letters Patent N 875,418,

' granted December 31, 1997, Torah-"improvement in Processes of Generating Formalde-' "f hyde, was erroneously written and printed-Arthur Eichengriim, whereas, said i i name should have been written andg print edl- A r'ghu r E lichenzrriln and that the said I Letters Patent should be with this correction therein that the sauielxnay 'conforin -z --'to the record of the case in the latent Oflice v Signed and sealed thigh 5th daysstat it; 1 908... V p {B A-14. 1.01 entranc I zlcting -Goinjrtissionaftoffatehfi, I Y

Correction in Letters PatenLNG- 875.415.

It is hereby certified that the name of the pa'tentee in Letters P atent N 0. 875,415, granted December 31, 1907, for an improvement in Processes of Generating Formaldeq hyde, was erroneously written and printed Arthur Eic'hengriim, whereae said name should have been written and printed Arthur Eiehen griln; and that the said 1 Letters Patent should be read with this correction therein that the saxne mas conform to the reeord'of the case in the Patent Ofiice.

Signed and sealed this 25th daQy of Flebruary, A. 1)., 1908.

[SEAL] x V 0., o. BILLIKGS,

Acting Commissioner of Patents, 

